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Process Equipment and Plant Design

Process Equipment and Plant Design
In a thin cylindrical shell, the hoop stress is __________ stress.

Circumferential tensile
Longitudinal
Radial
Compressive

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Process Equipment and Plant Design
An adequate clearance between the tray and the shell wall of a distillation column is provided to

Allow for thermal expansion and facilitate installation
None of these
Drain the liquid from the tray when the unit is not in operation
Avoid back-trapping

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Process Equipment and Plant Design
For turbine agitator, the impeller diameter is about

0.65 to 0.85 d
0.3 to 0.5 d
0.1 to 0.2 d
0.95 d

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Process Equipment and Plant Design
In a shell and tube heat exchanger having triangular pitch, the shell side equivalent diameter is given by

4(0.86p² - πd²/4)/πd
4(0.86p² - πd²)/πd
(p² - πd²/4)/πd
(4p² - πd²/4)/πd

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Process Equipment and Plant Design
An underdesigned steam trap will

Waste steam
Back up condensate and cause water hammer in steam line
None of these
Destroy itself of acceleration wear due to rapid recycling

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Process Equipment and Plant Design
__________ tray arrangement is recommended for distillation column having diameter upto 4 ft.

Split flow
Cascade
Radial flow
Cross flow

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